Pov display device and control method therefor

Abstract

The present invention relates to a POV display device using a light-emitting element, comprising: a fixed module including a motor; a rotary module located above the fixed module and rotated by means of the motor; at least one panel coupled to the rotary module; a plurality of light sources which are arranged on the panel and which have a plurality of pixels; a light source module including a light-emitting element array in which the plurality of light sources are arranged in the longitudinal direction thereof; and a controller for generating, between a first main frame and a second main frame, at least one subframe formed by means of the panel, wherein the first main frame can temporally precede the second main frame.

1 - 9 . (canceled) 
     
     
         10 . A persistence of vision (POV) display device comprising:
 a fixed module including a motor;   a rotatable module positioned on the fixed module and configured to be rotated by the motor;   a light source module comprising at least one panel coupled to the rotatable module;   a plurality of light sources arranged longitudinally on the at least one panel and comprising a plurality of pixels; and   a controller configured to generate at least one sub-frame between a first main frame and a second main frame for output by the panel,   wherein output of the first main frame temporally precedes the second main frame.   
     
     
         11 . The POV display device of  claim 10 , wherein the controller is configured to:
 multiply the first main frame and the second main frame by respective weights for each image scanning duration; and   generate the at least one sub-frame by combining the first main frame and the second main frame respectively multiplied by the weights.   
     
     
         12 . The POV display device of  claim 11 , wherein:
 linear weights are selected as the weights based on a difference between the first main frame and the second main frame being greater than or equal to a preset threshold value; and   non-linear weights are selected as the weights based on the difference being less than the preset threshold value.   
     
     
         13 . The POV display device of  claim 12 , wherein based on the non-linear weights being selected as the weights, the controller is configured to increase the weights during a portion where the difference between the first main frame and the second main frame is less than a specific small threshold value 
     
     
         14 . The POV display device of  claim 11 , wherein the panel includes a plurality of panels, and the controller is further configured to:
 divide an image scanning area into respective areas corresponding to the plurality of panels; and   apply the weights respectively to the areas.   
     
     
         15 . A method for controlling a persistence of vision (POV) display device, the method comprising:
 inputting image data of a first main frame and a second main frame to be displayed;   detecting weights for each of the first main frame and the second main frame;   applying the weights respectively to the first main frame and the second main frame;   forming a sub-frame by combining the first main frame and the second main frame applied with the weights; and   outputting synthesized image data via the POV display device based on the first main frame, the second main frame, and the sub-frame.   
     
     
         16 . The method of  claim 15 , wherein:
 linear weights are selected as the weights based on a difference between the first main frame and the second main frame being greater than or equal to a preset threshold value; and   non-linear weights are selected as the weights based on the difference being less than the preset threshold value.   
     
     
         17 . The method of  claim 16 , wherein selecting the non-linear weights as the weights includes:
 pre-processing images of the first main frame and the second main frame; and   detecting the weights of the frames based on analysis of the images.   
     
     
         18 . The method of  claim 15 , further comprising
 dividing an image scanning area into respective areas corresponding to a plurality of panels before inputting of the image data of the first main frame and the second main frame.